论文部分内容阅读
对黄淮麦区育成推广品种(59个)、2003~2004年度国家黄淮南片和江苏省区试参试品种(42个)、徐州农科所育成的高代品系以及一些育种亲本材料,共计309个品种(材料)的高分子量谷蛋白亚基组成进行了分析。结果共发现了32个亚基组成类型和16个等位基因变异。在Glu-A1位点发现了Glu-A1a、Glu-A1b、Glu-A1c3个等位基因;在Glu-B1位点发现了Glu-B1a、Glu-B1b、Glu-B1c、Glu-B1d、Glu-B1e、Glu-B1f、Glu-B1g、Glu-B1h、Glu-B1i、Glu-B1k共10个等位基因;在Glu-D1位点发现了Glu-D1a、Glu-D1b、Glu-D1d3个等位基因。以Glu-B1位点的变异最为丰富。在这3个位点上分别以等位基因Glu-A1c(null)、Glu-B1b(7+8)和Glu-D1a(2+12)为主,其出现频率分别为58.58%、58.90%和77.99%。高分子量谷蛋白亚基组成以(null,7+8,2+12)和(1,7+8,2+12)为主,分别占所有品种的32.69%和16.18%。在育成推广品种和参试品种中,等位基因变异均为11个;而亚基组成类型则分别为16个和13个。优质高分子量谷蛋白亚基5+10在所有材料、59个已审定推广品种和42个参试品种中的出现频率分别为20.4%、27.1%%和21.4%,频率均较低。这表明新近育成的品种在优质亚基的构成上并未取得较大进展,优质强筋小麦的品质育种还有较大的发展空间。试验结果也表明,黄淮冬麦区小麦品种的高分子量谷蛋白亚基组成类型和等位基因变异较为丰富,但其变异分布很不均匀,存在明显的优势亚基和组成类型。
59 cultivars of Huanghuai wheat breeding area, 42 Huananghuainan southern patches and Jiangsu provincial pilot cultivars from 2003 to 2004, and the high-yielding lines bred from Xuzhou Agricultural Science Institute and some breeding parental materials, The composition of high molecular weight glutenin subunits of 309 cultivars (materials) was analyzed. Results A total of 32 subunit composition types and 16 allele variants were found. Glu-A1a, Glu-A1b and Glu-A1c alleles were found at the Glu-A1 locus. Glu-B1a, Glu-B1b, Glu-B1c, Glu- B1e, Glu-B1f, Glu-B1g, Glu-B1h, Glu-B1i and Glu-B1k. Three alleles of Glu-D1a, Glu-D1b and Glu- gene. Glu-B1 site mutation is the most abundant. Allele Glu-A1c (Glu), Glu-B1b (7 + 8) and Glu-D1a (2 + 12) were the main alleles in these three loci. The frequency of occurrence was 58.58%, 58.90% 77.99%. The components of high molecular weight glutenin subunits were (null, 7 + 8,2 + 12) and (1,7 + 8,2 + 12), accounting for 32.69% and 16.18% of the total cultivars, respectively. There were eleven allelic variations among the cultivars and cultivars, while the subunit composition types were 16 and 13, respectively. The frequency of occurrence of high quality HMW glutenin subunits 5 + 10 was 20.4%, 27.1% and 21.4% in all 59 approved varieties and 42 tested varieties, respectively, at a lower frequency. This shows that the newly bred varieties in the composition of high quality subunits did not make much progress, high quality gluten wheat quality breeding there is more room for development. The results also showed that the HMW - GS compositional types and allelic variations of wheat cultivars in Huanghuai winter wheat region were abundant, but the variation distribution was very heterogeneous with obvious dominant subunit and compositional types.